It will give patients treatment by means of the amplified amplitude modulating wave current that can be obtained form medium frequency amplitude modulated by the low frequency pulse signal. 它将有关低频脉冲信号对中频调幅后,利用被放大的调幅波电流对人体进行治疗。
High Frequency Amplitude - modulated Magnetic Field and Behavior of Meniscus Fluctuation 高频调幅磁场分布和液面波动行为研究
The Design of High - precision Frequency and Amplitude Modulated Power Supply Based on DDS 基于DDS的高精度大功率调频源设计
To improve the surface quality of Al matrix composite billet, the experiment on soft-contact electromagnetic continuous casting was carried out through EMC slotted mould. The equiamplitude high frequency electromagnetic field and amplitude modulated electromagnetic field were exerted on the initial solidification zone respectively. 为改善铝基复合材料铸坯的表面质量,采用割缝式结晶器并在初始凝固区域分别施加等幅高频磁场和调幅磁场进行软接触电磁连铸实验。